Board-To-Board Connector

2. The board-to-board connector according to claim 1, wherein a distance F2 between the second contact row and the first side surface and a distance F3 between a part being farthest from the first side surface in an inner edge of the first positioning hole and the first side surface satisfy a relationship of F3>F2.

3. The board-to-board connector according to claim 1, wherein a notch open to the first side surface or a hole is formed between the second contact row and the first positioning hole.

5. The board-to-board connector according to claim 4, wherein the reinforcing member is disposed in such a way that the reinforcing plate part of the reinforcing member does not cover an inner edge of the first positioning hole or the second positioning hole when viewed in a thickness direction of the housing.

7. The board-to-board connector according to claim 4, wherein the reinforcing member further includes a soldering part projecting toward the first board from the reinforcing plate part of the reinforcing member and connectable by soldering to a pad of the first board.